We already know about one major event going down in the Pretty Little Liars Halloween special (Season 3, Episode 13: “This Is a Dark Ride”, airing October 23). But now, Lucy Hale (Aria) drops a hint about a “huge bombshell” moment during the episode as well. Read spoilers at your own risk! For more on Wetpaint Entertainment's philosophy on spoilers, click here.In a behind-the-scenes video shot while Lucy was filming the episode, she says, “My character actually disappears, and you later find out what’s happened, what happened while she disappeared.” Why would Aria, of all people, disappear? It could have something to do with those moments during the previews when Aria appears to be trapped in a small room with no way out. With Spencer (Troian Bellisario) getting attacked by one of the baby monsters, it looks like the “A” team will be spreading out their soldiers and planning a sweep of all the Liars. Lucy explains that, while Aria is gone, she misses “a huge bombshell [that] further complicates the mystery of the thing.” If she’s referring to the death, does this mean Aria is safe, at least? Or, could it have something to do with that “box” we’ve heard about and what’s inside?Watch the video here, and share your theories below!Find more Pretty Little Liars spoilers here.Don’t miss the next new episode of PLL, the Halloween special,on Tuesday, October 23 at 8 p.m. ET/PT onABC Family.Catch the final webisode of Pretty Dirty Secrets on Tuesday, October 16 at 9 p.m. ET/5 p.m. PT onABCFamily.com.Source: Zap2ItMolly Friedman is an editor at Wetpaint Entertainment. Follow her on Twitter@MollyFriedman.Get your Pretty Little Liars fix:Like us on Facebook and Follow uson Twitter andTumblr!